81052205

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 109638144

約数和(自身を除く): 28585939

約数列:

[1, 5, 13, 43, 47, 65, 215, 235, 559, 611, 617, 2021, 2795, 3055, 3085, 8021, 10105, 26273, 26531, 28999, 40105, 131365, 132655, 144995, 344903, 376987, 1246957, 1724515, 1884935, 6234785, 16210441, 81052205]

約数ペア:

[(1, 81052205), (5, 16210441), (13, 6234785), (43, 1884935), (47, 1724515), (65, 1246957), (215, 376987), (235, 344903), (559, 144995), (611, 132655), (617, 131365), (2021, 40105), (2795, 28999), (3055, 26531), (3085, 26273), (8021, 10105)]